n | a(n) |
---|---|
1 | 5 |
2 | 7 |
3 | 59 |
4 | 79 |
5 | 97 |
6 | 557 |
7 | 577 |
8 | 599 |
9 | 757 |
10 | 797 |
11 | 977 |
12 | 997 |
13 | 5557 |
14 | 5779 |
15 | 7559 |
16 | 7577 |
17 | 7757 |
18 | 7759 |
19 | 55579 |
20 | 55799 |
21 | 55997 |
22 | 57557 |
23 | 57559 |
24 | 57977 |
25 | 59557 |
26 | 59779 |
27 | 59797 |
28 | 59957 |
29 | 59999 |
30 | 75557 |
31 | 75577 |
32 | 75797 |
33 | 75979 |
34 | 75997 |
35 | 77557 |
36 | 77797 |
37 | 77977 |
38 | 77999 |
39 | 79559 |
40 | 79579 |
41 | 79757 |
42 | 79777 |
[5,7,59,79,97,557,577,599,757,797,977,997,5557, 5779,7559,7577,7757,7759,55579,55799,55997,57557, 57559,57977,59557,59779,59797,59957,59999,75557, 75577,75797,75979,75997,77557,77797,77977,77999, 79559,79579,79757,79777] |